CVE-2018-18956
7.5
HIGH
CVSS 3.1
EPSS 1.1%
Description
The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4.0.6 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser, as exploited in the wild in November 2018.
How to fix CVE-2018-18956
To remediate CVE-2018-18956, upgrade the affected package to a fixed version below.
- Debian/suricata—upgrade to 1:4.0.6-1 or later
Is CVE-2018-18956 being exploited?
Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:4.0.6-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |